diff --git a/dnn/src/arm_common/conv_bias/int8/dot_direct_nchw_nchw44_algo.cpp b/dnn/src/arm_common/conv_bias/int8/dot_direct_nchw_nchw44_algo.cpp
index 9d3acdf7bc757879af1f4a8bdcc3df206a733b60..fb86977d17527306a1cbcf396c6a07d52813c25b 100644
--- a/dnn/src/arm_common/conv_bias/int8/dot_direct_nchw_nchw44_algo.cpp
+++ b/dnn/src/arm_common/conv_bias/int8/dot_direct_nchw_nchw44_algo.cpp
@@ -182,7 +182,7 @@ bool ConvBiasImpl::AlgoDotS8DirectNCHWNCHW44::usable(
     bool ok_type = ((param.src_type.enumv() == DTypeEnum::QuantizedS8 &&
                      param.filter_type.enumv() == DTypeEnum::QuantizedS8 &&
                      (param.dst_type.enumv() == DTypeEnum::QuantizedS8))) &&
-                   (fm.format == param::Convolution::Format::NCHW44);
+                   (fm.format == param::Convolution::Format::NCHW44_DOT);
     bool ok_src_dst = (oc % 4 == 0 && oc >= 4 && ic < 4);
     bool ok_filter = fm.spatial_ndim == 2 && fh == fm.spatial[1] &&
                      (fh == 2 || fh == 3 || fh == 5 || fh == 7);
diff --git a/dnn/src/arm_common/conv_bias/opr_impl.cpp b/dnn/src/arm_common/conv_bias/opr_impl.cpp
index f7edf5956b620176effeddf0d7ee3d316ae51775..a813fce8051681e52af629f972cb24be21cda84e 100644
--- a/dnn/src/arm_common/conv_bias/opr_impl.cpp
+++ b/dnn/src/arm_common/conv_bias/opr_impl.cpp
@@ -55,7 +55,6 @@ class ConvBiasImpl::AlgoPack : NonCopyableObj {
     AlgoS8ChanWiseStride2NCHW44 s8_channel_wise_stride2_nchw44;
 
 #if __ARM_FEATURE_DOTPROD
-    AlgoDotS8DirectNCHWNCHW44 ds8_direct_stride2_nchw_nchw44;
     AlgoDotS8DirectStride1 ds8_direct_stride1_large_group{true};
     AlgoDotS8DirectStride1 ds8_direct_stride1_small_group{false};
     AlgoDotS8DirectStride2 ds8_direct_stride2_large_group{true};
@@ -66,6 +65,7 @@ class ConvBiasImpl::AlgoPack : NonCopyableObj {
     AlgoDotU8DirectStride2 du8_direct_stride2_small_group{false};
 
     AlgoDotS8Direct_NCHW44 ds8_direct_nchw44;
+    AlgoDotS8DirectNCHWNCHW44 ds8_direct_nchw_nchw44;
 #endif
 
     AlgoF32DirectNCHWNCHW44 f32_direct_stride2_nchw_nchw44;
@@ -96,7 +96,6 @@ class ConvBiasImpl::AlgoPack : NonCopyableObj {
 public:
     AlgoPack() {
 #if __ARM_FEATURE_DOTPROD
-        direct_algos.emplace_back(&ds8_direct_stride2_nchw_nchw44);
         direct_algos.emplace_back(&ds8_direct_stride1_large_group);
         direct_algos.emplace_back(&ds8_direct_stride1_small_group);
         direct_algos.emplace_back(&ds8_direct_stride2_large_group);
@@ -107,6 +106,7 @@ public:
         direct_algos.emplace_back(&du8_direct_stride2_small_group);
 
         direct_algos.emplace_back(&ds8_direct_nchw44);
+        direct_algos.emplace_back(&ds8_direct_nchw_nchw44);
 #endif
         direct_algos.emplace_back(&qu8_direct_stride2_large_group);
         direct_algos.emplace_back(&qu8_direct_stride2_small_group);
diff --git a/dnn/test/arm_common/conv_bias_multi_thread.cpp b/dnn/test/arm_common/conv_bias_multi_thread.cpp
index 0f9eeef4da41826a9efe9e16a5926bd1afe88648..acb05e59dfd5126ccda1ca23ca688597c8d07d73 100644
--- a/dnn/test/arm_common/conv_bias_multi_thread.cpp
+++ b/dnn/test/arm_common/conv_bias_multi_thread.cpp
@@ -582,14 +582,19 @@ TEST_F(ARM_COMMON_MULTI_THREADS, CONV_BIAS_QUINT8_STRIDE2_SMALL_GROUP) {
 /****************************dot qint8 direct*************************/
 #if __ARM_FEATURE_DOTPROD
 TEST_F(ARM_COMMON_MULTI_THREADS, CONV_BIAS_DOT_NCHW_NCHW44) {
-    checker_conv_bias_qint8x8x8(
-            get_nchw44_conv_bias_args({2, 3, 5, 7}, 2, false, false, false,
-                                      true),
-            handle(), "ARMDOTS8_NCHW_NCHW44");
-    checker_conv_bias_qint8x8x8(
-            get_nchw44_conv_bias_args({2, 3, 5, 7}, 1, false, false, false,
-                                      true),
-            handle(), "ARMDOTS8_NCHW_NCHW44");
+    auto args = get_nchw44_conv_bias_args({2, 3, 5, 7}, 2, false, false, false,
+                                          true);
+    for (auto&& arg : args) {
+        arg.param.format = param::ConvBias::Format::NCHW44_DOT;
+    }
+    checker_conv_bias_qint8x8x8(args, handle(), "ARMDOTS8_NCHW_NCHW44");
+
+    args = get_nchw44_conv_bias_args({2, 3, 5, 7}, 1, false, false, false,
+                                     true);
+    for (auto&& arg : args) {
+        arg.param.format = param::ConvBias::Format::NCHW44_DOT;
+    }
+    checker_conv_bias_qint8x8x8(args, handle(), "ARMDOTS8_NCHW_NCHW44");
 }
 TEST_F(ARM_COMMON_MULTI_THREADS,
        CONV_BIAS_INT8_STRIDE1_WITHDOTPROD_LARGE_GROUP) {
diff --git a/sdk/load-and-run/src/mgblar.cpp b/sdk/load-and-run/src/mgblar.cpp
index 15103ab4fedac40ab1a78447f13589731ff048db..004adae6bf24801b09be4f18f2c56418780c8ae3 100644
--- a/sdk/load-and-run/src/mgblar.cpp
+++ b/sdk/load-and-run/src/mgblar.cpp
@@ -987,6 +987,12 @@ Args Args::from_argv(int argc, char **argv) {
         cb(nchw32);
         cb(nhwcd4);
 #undef cb
+        if (!strcmp(argv[i], "--enable-nchw44-dot")) {
+            mgb_log_warn("enable-nchw44-dot optimization");
+            graph_opt.graph_opt.enable_nchw44_dot();
+            continue;
+        }
+
         if (!strcmp(argv[i], "--enable-fuse-conv-bias-nonlinearity")) {
             mgb_log_warn("enable fuse-conv-bias-nonlinearity optimization");
             graph_opt.graph_opt.enable_fuse_conv_bias_nonlinearity();
diff --git a/src/core/include/megbrain/utils/persistent_cache.h b/src/core/include/megbrain/utils/persistent_cache.h
index 2469e5109502cfcf276b5f44c1c0bb46ceca0172..bd6ce5a2c0ec724d7f740814df5ef03265ef93c4 100644
--- a/src/core/include/megbrain/utils/persistent_cache.h
+++ b/src/core/include/megbrain/utils/persistent_cache.h
@@ -94,7 +94,6 @@ namespace mgb {
                         m_param{param}, m_param_size{param_size}
                     {
                     }
-
                     //! build a blob representation to be used as cache key
                     PersistentCache::Blob build_blob() const;
             };
diff --git a/src/opr/impl/dnn/convolution.cpp b/src/opr/impl/dnn/convolution.cpp
index 43e666d95f501e088867431a946abe40a7cf9b5c..1d896fa240044a37622e43c2e46b842929ca0e51 100644
--- a/src/opr/impl/dnn/convolution.cpp
+++ b/src/opr/impl/dnn/convolution.cpp
@@ -611,7 +611,6 @@ AlgoChooserProfileCache::Result AlgoChooser<Opr>::get_profile_result(
     AlgoChooserProfileCache::Key cache_key{origin_layouts.data(),
                                            origin_layouts.size(), &origin_param,
                                            sizeof(origin_param)};
-
     {
         auto&& rst = cache.get(cache_key);
         if (rst.valid())
diff --git a/src/plugin/impl/opr_footprint.cpp b/src/plugin/impl/opr_footprint.cpp
index 22111a7dbf7d07f181c770d1fab8d3ffbd8ef431..990aa7879e6b42bcd59638786b5a3baad1233c05 100644
--- a/src/plugin/impl/opr_footprint.cpp
+++ b/src/plugin/impl/opr_footprint.cpp
@@ -107,7 +107,8 @@ uint64_t eval_conv_computation(const TensorShape& src_shape,
                                  src_shape[1] / group * 2;
             return hybird_nchwx ? computation : computation * 8;
         }
-        if (param.format == Param::Format::NCHW44) {
+        if (param.format == Param::Format::NCHW44 ||
+            param.format == Param::Format::NCHW44_DOT) {
             //! if channel wise weight layout is {group/4, FH, FW, 1, 1, 4}
             if (filter_shape[1] == 1 && filter_shape[2] == 1) {
                 group *= 4;
@@ -145,6 +146,7 @@ uint64_t eval_conv_computation(const TensorShape& src_shape,
     if (param.format == Param::Format::NCHW4 ||
         param.format == Param::Format::NCHW88 ||
         param.format == Param::Format::NCHW44 ||
+        param.format == Param::Format::NCHW44_DOT ||
         param.format == Param::Format::NCHW32) {
         return eval_conv_computation_nchwx();
     }